United Airlines is a legitimate business designed to fly you to the destination of your choice. Its twitter account is located at twitter.com/united.
United Airlanes is not a business at all. It’s a twitter account designed to anger anyone who can’t tell the difference between the two. And it is very good at what it does.
The page clearly states it is a parody account, but angry passengers who can’t spell continue to tweet their frustrations. The results are hilarious. Take a look: